Performance

F

Page Weight Budget

Action

5.8 MB transferred, 308 requests

FIX

5.8 MB transferred, 308 requests

Page weighs 14.9 MB (5.8 MB transferred)

JavaScript is 4.5 MB — consider code splitting or lazy loading

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Got: 4.5 MB

Images are 1.1 MB — compress or use modern formats

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Got: 1.1 MB

308 HTTP requests — consider bundling or reducing

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Estimated 1.2 g CO2 per page load

5.8 MB transferred

308 requests

1.2 g CO2 per page load

JavaScript 4.5 MiB 78%

Images 1.1 MiB 19%

Other 125.5 KiB 2%

Fonts 29.3 KiB 0%

HTML 23.8 KiB 0%

Other 9.1 KiB 0%

CSS 6.6 KiB 0%

Other 5.0 KiB 0%

Other 4.9 KiB 0%

Other 1.0 KiB 0%

0 2.4 MB 4.9 MB

Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D

Third-Party Impact

Action

100% third-party, 0 ms blocking

FIX

100% third-party, 0 ms blocking

Third-party code accounts for 100% of page weight (5.8 MiB of 5.8 MiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

F

JS Execution Cost

Action

16748ms total JS execution

FIX

16748ms total JS execution

https://www.hotpepper.jp/: 2503ms CPU time

Unattributable: 1856ms CPU time

https://www.googletagmanager.com/gtm.js?id=GTM-M6K...: 1037ms CPU time

https://www.googletagmanager.com/gtag/js?id=G-XK5B...: 691ms CPU time

https://www.googletagmanager.com/gtag/js?id=AW-108...: 536ms CPU time

Third-party scripts: 16748ms (100% of total)

Main Thread Breakdown

Script Evaluation 61% Style & Layout 13% Script Parsing & Compilation 13% Other 11%

Script	Total	Scripting	Parse/Compile	Party
https://www.hotpepper.jp/	2503ms	50ms	11ms	3rd
Unattributable	1856ms	273ms	0ms	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-M6KP89G	1037ms	885ms	108ms	3rd
https://www.googletagmanager.com/gtag/js?id=G-XK5B2BD65L&cx=c&_slc=1	691ms	613ms	69ms	3rd
https://www.googletagmanager.com/gtag/js?id=AW-10804069992&cx=c&gtm=4e64k1	536ms	462ms	60ms	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-DC-6973756&cx=c&gtm=4e64k1	503ms	426ms	63ms	3rd
https://www.datadoghq-browser-agent.com/datadog-rum-v3.js	417ms	367ms	16ms	3rd
https://www.googletagmanager.com/gtag/js?id=AW-996724288&cx=c&gtm=4e64k1	388ms	316ms	69ms	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-996654508&cx=c&gtm=4e64k1	367ms	280ms	83ms	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-869188466&cx=c&gtm=4e64k1	359ms	306ms	50ms	3rd

Showing top 10 of 50 scripts

F

JS Bundles

Action

92 scripts, 1.7 MB unused

FIX

92 scripts, 1.7 MB unused

https://www.googletagmanager.com/gtag/js?id=AW-956...: 102 KB unused (75%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=G-XK5B...: 69 KB unused (42%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/destination?...: 62 KB unused (46%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/destination?...: 62 KB unused (46%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/destination?...: 62 KB unused (46%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 1.7 MB

1752 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.googletagmanager.com/gtag/js?id=AW-956136779&cx=c&gtm=4e64k1	136 KB	102 KB (75%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-XK5B2BD65L&cx=c&_slc=1	166 KB	69 KB (42%)	✓	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-966779927&cx=c&gtm=4e64k1	134 KB	62 KB (46%)	✓	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-995172108&cx=c&gtm=4e64k1	134 KB	62 KB (46%)	✓	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-969141787&cx=c&gtm=4e64k1	134 KB	62 KB (46%)	✓	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-DC-6973756&cx=c&gtm=4e64k1	134 KB	60 KB (45%)	✓	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-973554149&cx=c&gtm=4e64k1	134 KB	60 KB (45%)	✓	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-380557490&cx=c&gtm=4e64k1	134 KB	60 KB (45%)	✓	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-994076175&cx=c&gtm=4e64k1	134 KB	60 KB (45%)	✓	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-881206465&cx=c&gtm=4e64k1	137 KB	60 KB (44%)	✓	3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

F

Page Weight Inventory

Action

308 resources · 5.8 MB · 1.7 MB savings available

FIX

308 resources · 5.8 MB · 1.7 MB savings available

Page weight 4.8 MB over 1MB target

Got: 5.8 MB Expected: ≤ 1 MB

~1.7 MB of savings available

307 third-party resources (100% of weight)

308 resources · 5.8 MiB · 307 third-party 4.8 MiB over 1MB target

JavaScript 78% · 4.5 MiB

Image 21% · 1.2 MiB

Font 0% · 29.3 KiB

Document 0% · 24.3 KiB

Other 0% · 16.9 KiB

CSS 0% · 6.6 KiB

~1.7 MiB of savings available

Remove unused JavaScript: 1.7 MiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

308 resources			5.8 MiB

F

HTTP Caching

Action

No cache headers

FIX

No cache headers

No Cache-Control header found

Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C

Image Optimization

Action

131 images, 0 KB saveable

REVIEW

131 images, 0 KB saveable

https://imgfp.hotp.jp/IMGH/44/60/P048464460/P04846... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://imgfp.hotp.jp/IMGH/27/60/P046942760/P04694... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://imgfp.hotp.jp/IMGH/89/95/P041218995/P04121... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://imgfp.hotp.jp/IMGH/73/51/P025157351/P02515... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://imgfp.hotp.jp/IMGH/39/71/P047553971/P04755... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://imgfp.hotp.jp/IMGH/94/78/P045009478/P04500... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://imgfp.hotp.jp/IMGH/22/89/P049822289/P04982... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://imgfp.hotp.jp/IMGH/05/76/P047920576/P04792... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://imgfp.hotp.jp/IMGH/02/52/P049290252/P04929... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://imgfp.hotp.jp/IMGH/62/42/P043726242/P04372... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

131 images 1.1 MB

0 oversized -0 KB

124 legacy format

10 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

1 fonts (29 KB)

PASS

1 fonts (29 KB)

1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

29 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

hpg-sp-webfont.ttf ttf swap

Size 29 KB

Load time 10 ms

Start 1.3 s

Risk FOUT — text flashes from fallback to web font

Convert to woff2 for ~30% smaller file size

Optimization checklist

Preload critical fonts (priority=high)
Use woff2 format for all fonts
Set font-display to swap, optional, or fallback
Subset large fonts (≤100 KB each)

Fixing the unchecked items could save ~9 KB and ~18 ms

A+

Resource Caching

All resources properly cached

PASS

All resources properly cached

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

No optimization needed

PASS

No optimization needed

No resource hint issues

A+

Render-Blocking Resources

No render-blocking resources detected

PASS

No render-blocking resources detected

No render-blocking resources detected in <head>

A+

Third-Party Resources

No third-party resources detected

PASS

No third-party resources detected

Network Waterfall

308 requests over 6687ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

Per-script blocking time, transfer cost, and cache headers

INFO

100% of JavaScript execution is third-party

First-party Third-party 16748ms · 4471KB · ¥23143/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
www.hotpepper.jp www.hotpepper.jp	Other	2503ms	21 KB	—	¥3459/mo	Costly
Unattributable Unattributable	Other	1856ms	0 KB	—	¥2564/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	1037ms	184 KB	30%	¥1433/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	691ms	166 KB	42%	¥954/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	536ms	137 KB	39%	¥741/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	503ms	134 KB	45%	¥695/mo	Costly
www.datadoghq-browser-agent.com www.datadoghq-browser-agent.com	Other	417ms	39 KB	62%	¥576/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	388ms	137 KB	39%	¥537/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	367ms	137 KB	43%	¥507/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	359ms	137 KB	43%	¥495/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	332ms	137 KB	44%	¥458/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	325ms	137 KB	40%	¥449/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	321ms	138 KB	40%	¥444/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	306ms	137 KB	44%	¥423/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	306ms	137 KB	44%	¥423/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	298ms	137 KB	44%	¥412/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	296ms	137 KB	43%	¥409/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	293ms	134 KB	46%	¥404/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	290ms	137 KB	44%	¥400/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	289ms	137 KB	44%	¥399/mo	Costly
analytics.tiktok.com analytics.tiktok.com	Other	283ms	106 KB	53%	¥392/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	282ms	137 KB	43%	¥390/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	281ms	134 KB	45%	¥388/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	280ms	137 KB	43%	¥388/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	279ms	137 KB	44%	¥386/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	279ms	134 KB	46%	¥386/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	275ms	134 KB	45%	¥381/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	271ms	134 KB	45%	¥374/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	250ms	134 KB	46%	¥346/mo	Costly
www.hotpepper.jp www.hotpepper.jp	Other	247ms	47 KB	—	¥341/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	234ms	97 KB	33%	¥323/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	187ms	45 KB	—	¥258/mo	Costly
analytics.tiktok.com analytics.tiktok.com	Other	162ms	118 KB	—	¥224/mo	Costly
Twitter/X Pixel static.ads-twitter.com	Advertising	161ms	13 KB	—	¥223/mo	Costly
Google Analytics www.google-analytics.com	Analytics	151ms	21 KB	—	¥208/mo	Costly
imgfp.hotp.jp imgfp.hotp.jp	Other	145ms	28 KB	—	¥200/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	138ms	16 KB	—	¥190/mo	Costly
s.yimg.jp s.yimg.jp	Other	133ms	12 KB	—	¥184/mo	Costly
code.usergram.info code.usergram.info	Other	115ms	18 KB	—	¥160/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	115ms	136 KB	41%	¥159/mo	Costly
cdn.smartnews-ads.com cdn.smartnews-ads.com	Other	108ms	3 KB	—	¥149/mo	Costly
tm.r-ad.ne.jp tm.r-ad.ne.jp	Other	95ms	6 KB	—	¥131/mo	Costly
Google Analytics www.google-analytics.com	Analytics	86ms	1 KB	—	¥119/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	74ms	136 KB	75%	¥102/mo	Costly
d.line-scdn.net d.line-scdn.net	Other	73ms	10 KB	—	¥100/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	69ms	16 KB	—	¥95/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	68ms	16 KB	—	¥93/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	66ms	17 KB	—	¥92/mo	Costly
b99.yahoo.co.jp b99.yahoo.co.jp	Other	65ms	23 KB	—	¥90/mo	Costly
analytics.tiktok.com analytics.tiktok.com	Other	62ms	39 KB	—	¥86/mo	Costly

www.hotpepper.jp

Other

Costly

Execution 2503ms

Transfer 21 KB

Monthly Cost ¥3459/mo

Unattributable

Other

Costly

Execution 1856ms

Transfer 0 KB

Monthly Cost ¥2564/mo

Google Tag Manager

Tag Manager

Costly

Execution 1037ms

Transfer 184 KB

Unused 30%

Monthly Cost ¥1433/mo

Google Tag Manager

Tag Manager

Costly

Execution 691ms

Transfer 166 KB

Unused 42%

Monthly Cost ¥954/mo

Google Tag Manager

Tag Manager

Costly

Execution 536ms

Transfer 137 KB

Unused 39%

Monthly Cost ¥741/mo

Google Tag Manager

Tag Manager

Costly

Execution 503ms

Transfer 134 KB

Unused 45%

Monthly Cost ¥695/mo

www.datadoghq-browser-agent.com

Other

Costly

Execution 417ms

Transfer 39 KB

Unused 62%

Monthly Cost ¥576/mo

Google Tag Manager

Tag Manager

Costly

Execution 388ms

Transfer 137 KB

Unused 39%

Monthly Cost ¥537/mo

Google Tag Manager

Tag Manager

Costly

Execution 367ms

Transfer 137 KB

Unused 43%

Monthly Cost ¥507/mo

Google Tag Manager

Tag Manager

Costly

Execution 359ms

Transfer 137 KB

Unused 43%

Monthly Cost ¥495/mo

Google Tag Manager

Tag Manager

Costly

Execution 332ms

Transfer 137 KB

Unused 44%

Monthly Cost ¥458/mo

Google Tag Manager

Tag Manager

Costly

Execution 325ms

Transfer 137 KB

Unused 40%

Monthly Cost ¥449/mo

Google Tag Manager

Tag Manager

Costly

Execution 321ms

Transfer 138 KB

Unused 40%

Monthly Cost ¥444/mo

Google Tag Manager

Tag Manager

Costly

Execution 306ms

Transfer 137 KB

Unused 44%

Monthly Cost ¥423/mo

Google Tag Manager

Tag Manager

Costly

Execution 306ms

Transfer 137 KB

Unused 44%

Monthly Cost ¥423/mo

Google Tag Manager

Tag Manager

Costly

Execution 298ms

Transfer 137 KB

Unused 44%

Monthly Cost ¥412/mo

Google Tag Manager

Tag Manager

Costly

Execution 296ms

Transfer 137 KB

Unused 43%

Monthly Cost ¥409/mo

Google Tag Manager

Tag Manager

Costly

Execution 293ms

Transfer 134 KB

Unused 46%

Monthly Cost ¥404/mo

Google Tag Manager

Tag Manager

Costly

Execution 290ms

Transfer 137 KB

Unused 44%

Monthly Cost ¥400/mo

Google Tag Manager

Tag Manager

Costly

Execution 289ms

Transfer 137 KB

Unused 44%

Monthly Cost ¥399/mo

analytics.tiktok.com

Other

Costly

Execution 283ms

Transfer 106 KB

Unused 53%

Monthly Cost ¥392/mo

Google Tag Manager

Tag Manager

Costly

Execution 282ms

Transfer 137 KB

Unused 43%

Monthly Cost ¥390/mo

Google Tag Manager

Tag Manager

Costly

Execution 281ms

Transfer 134 KB

Unused 45%

Monthly Cost ¥388/mo

Google Tag Manager

Tag Manager

Costly

Execution 280ms

Transfer 137 KB

Unused 43%

Monthly Cost ¥388/mo

Google Tag Manager

Tag Manager

Costly

Execution 279ms

Transfer 137 KB

Unused 44%

Monthly Cost ¥386/mo

Google Tag Manager

Tag Manager

Costly

Execution 279ms

Transfer 134 KB

Unused 46%

Monthly Cost ¥386/mo

Google Tag Manager

Tag Manager

Costly

Execution 275ms

Transfer 134 KB

Unused 45%

Monthly Cost ¥381/mo

Google Tag Manager

Tag Manager

Costly

Execution 271ms

Transfer 134 KB

Unused 45%

Monthly Cost ¥374/mo

Google Tag Manager

Tag Manager

Costly

Execution 250ms

Transfer 134 KB

Unused 46%

Monthly Cost ¥346/mo

www.hotpepper.jp

Other

Costly

Execution 247ms

Transfer 47 KB

Monthly Cost ¥341/mo

Facebook Pixel

Advertising

Costly

Execution 234ms

Transfer 97 KB

Unused 33%

Monthly Cost ¥323/mo

Facebook Pixel

Advertising

Costly

Execution 187ms

Transfer 45 KB

Monthly Cost ¥258/mo

analytics.tiktok.com

Other

Costly

Execution 162ms

Transfer 118 KB

Monthly Cost ¥224/mo

Twitter/X Pixel

Advertising

Costly

Execution 161ms

Transfer 13 KB

Monthly Cost ¥223/mo

Google Analytics

Analytics

Costly

Execution 151ms

Transfer 21 KB

Monthly Cost ¥208/mo

imgfp.hotp.jp

Other

Costly

Execution 145ms

Transfer 28 KB

Monthly Cost ¥200/mo

Facebook Pixel

Advertising

Costly

Execution 138ms

Transfer 16 KB

Monthly Cost ¥190/mo

s.yimg.jp

Other

Costly

Execution 133ms

Transfer 12 KB

Monthly Cost ¥184/mo

code.usergram.info

Other

Costly

Execution 115ms

Transfer 18 KB

Monthly Cost ¥160/mo

Google Tag Manager

Tag Manager

Costly

Execution 115ms

Transfer 136 KB

Unused 41%

Monthly Cost ¥159/mo

cdn.smartnews-ads.com

Other

Costly

Execution 108ms

Transfer 3 KB

Monthly Cost ¥149/mo

tm.r-ad.ne.jp

Other

Costly

Execution 95ms

Transfer 6 KB

Monthly Cost ¥131/mo

Google Analytics

Analytics

Costly

Execution 86ms

Transfer 1 KB

Monthly Cost ¥119/mo

Google Tag Manager

Tag Manager

Costly

Execution 74ms

Transfer 136 KB

Unused 75%

Monthly Cost ¥102/mo

d.line-scdn.net

Other

Costly

Execution 73ms

Transfer 10 KB

Monthly Cost ¥100/mo

Facebook Pixel

Advertising

Costly

Execution 69ms

Transfer 16 KB

Monthly Cost ¥95/mo

Facebook Pixel

Advertising

Costly

Execution 68ms

Transfer 16 KB

Monthly Cost ¥93/mo

Facebook Pixel

Advertising

Costly

Execution 66ms

Transfer 17 KB

Monthly Cost ¥92/mo

b99.yahoo.co.jp

Other

Costly

Execution 65ms

Transfer 23 KB

Monthly Cost ¥90/mo

analytics.tiktok.com

Other

Costly

Execution 62ms

Transfer 39 KB

Monthly Cost ¥86/mo

These scripts may cost more than they're worth

www.hotpepper.jp adds 2503ms and costs ~¥3459/month
Unattributable adds 1856ms and costs ~¥2564/month
Google Tag Manager adds 1037ms and costs ~¥1433/month
Google Tag Manager adds 691ms and costs ~¥954/month
Google Tag Manager adds 536ms and costs ~¥741/month
Google Tag Manager adds 503ms and costs ~¥695/month
www.datadoghq-browser-agent.com adds 417ms and costs ~¥576/month
Google Tag Manager adds 388ms and costs ~¥537/month
Google Tag Manager adds 367ms and costs ~¥507/month
Google Tag Manager adds 359ms and costs ~¥495/month
Google Tag Manager adds 332ms and costs ~¥458/month
Google Tag Manager adds 325ms and costs ~¥449/month
Google Tag Manager adds 321ms and costs ~¥444/month
Google Tag Manager adds 306ms and costs ~¥423/month
Google Tag Manager adds 306ms and costs ~¥423/month
Google Tag Manager adds 298ms and costs ~¥412/month
Google Tag Manager adds 296ms and costs ~¥409/month
Google Tag Manager adds 293ms and costs ~¥404/month
Google Tag Manager adds 290ms and costs ~¥400/month
Google Tag Manager adds 289ms and costs ~¥399/month
analytics.tiktok.com adds 283ms and costs ~¥392/month
Google Tag Manager adds 282ms and costs ~¥390/month
Google Tag Manager adds 281ms and costs ~¥388/month
Google Tag Manager adds 280ms and costs ~¥388/month
Google Tag Manager adds 279ms and costs ~¥386/month
Google Tag Manager adds 279ms and costs ~¥386/month
Google Tag Manager adds 275ms and costs ~¥381/month
Google Tag Manager adds 271ms and costs ~¥374/month
Google Tag Manager adds 250ms and costs ~¥346/month
www.hotpepper.jp adds 247ms and costs ~¥341/month
Facebook Pixel adds 234ms and costs ~¥323/month
Facebook Pixel adds 187ms and costs ~¥258/month
analytics.tiktok.com adds 162ms and costs ~¥224/month
Twitter/X Pixel adds 161ms and costs ~¥223/month
Google Analytics adds 151ms and costs ~¥208/month
imgfp.hotp.jp adds 145ms and costs ~¥200/month
Facebook Pixel adds 138ms and costs ~¥190/month
s.yimg.jp adds 133ms and costs ~¥184/month
code.usergram.info adds 115ms and costs ~¥160/month
Google Tag Manager adds 115ms and costs ~¥159/month
cdn.smartnews-ads.com adds 108ms and costs ~¥149/month
tm.r-ad.ne.jp adds 95ms and costs ~¥131/month
Google Analytics adds 86ms and costs ~¥119/month
Google Tag Manager adds 74ms and costs ~¥102/month
d.line-scdn.net adds 73ms and costs ~¥100/month
Facebook Pixel adds 69ms and costs ~¥95/month
Facebook Pixel adds 68ms and costs ~¥93/month
Facebook Pixel adds 66ms and costs ~¥92/month
b99.yahoo.co.jp adds 65ms and costs ~¥90/month
analytics.tiktok.com adds 62ms and costs ~¥86/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.hotpepper.jp takes 2503ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 1856ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 1037ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 691ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 536ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 503ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.datadoghq-browser-agent.com takes 417ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

62% of www.datadoghq-browser-agent.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

Google Tag Manager takes 388ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 367ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 359ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 332ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 325ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 321ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 306ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 306ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 298ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 296ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 293ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 290ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 289ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

analytics.tiktok.com takes 283ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

53% of analytics.tiktok.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

Google Tag Manager takes 282ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 281ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 280ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 279ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 279ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 275ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 271ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 250ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.hotpepper.jp takes 247ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Facebook Pixel takes 234ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Facebook Pixel takes 187ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

analytics.tiktok.com takes 162ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Twitter/X Pixel takes 161ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Analytics takes 151ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

imgfp.hotp.jp takes 145ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Facebook Pixel takes 138ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

s.yimg.jp takes 133ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

code.usergram.info takes 115ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 115ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

cdn.smartnews-ads.com takes 108ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

tm.r-ad.ne.jp takes 95ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Analytics takes 86ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 74ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

75% of Google Tag Manager's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

d.line-scdn.net takes 73ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Facebook Pixel takes 69ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Facebook Pixel takes 68ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Facebook Pixel takes 66ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

b99.yahoo.co.jp takes 65ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

analytics.tiktok.com takes 62ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

Browse & Analyze

Learn

Page Load Progression

Green Hosting

Font loading timeline

Optimization checklist

These scripts may cost more than they're worth